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Traffic analysis projects lane reduction will divert some peak-period trips; town to collect baseline counts before pilot
Summary
Consultants presented a traffic diversion analysis showing a road diet in Needham Center would reduce vehicular capacity and likely divert some peak-hour trips onto nearby streets. Project staff will gather baseline counts at prioritized intersections and conduct outreach ahead of a pilot.
Consultants told the Envision Needham Center Project Working Group on March 3 that a road-diet pilot that reduces multi-lane approaches to one travel lane per direction would lower capacity and likely divert some peak-period vehicles to nearby streets; the team is planning baseline counts and further modeling before a pilot.
The analysis is a three-step approach: estimate how many peak-hour trips would be diverted, identify likely alternate routes, and quantify diverted volumes at key intersections to determine where monitoring and mitigation are needed.
Presenters and assumptions
Jim Fitzgerald, a project presenter, described how the team estimated diverted trips out to a 10-year horizon using background growth rates and known or planned developments. Steve Cicari provided peak-hour definitions, saying the morning peak hour is 07:45–08:45 and the afternoon peak is 17:00–18:00. The team emphasized several base…
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